CN218973785U - Air feed support rod connecting section device - Google Patents
Air feed support rod connecting section device Download PDFInfo
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- CN218973785U CN218973785U CN202223464794.6U CN202223464794U CN218973785U CN 218973785 U CN218973785 U CN 218973785U CN 202223464794 U CN202223464794 U CN 202223464794U CN 218973785 U CN218973785 U CN 218973785U
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- strut
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The utility model provides a gas supply support rod connecting section device, which relates to the technical field of test aerodynamics and comprises the following components: the ventilation support arm mounting section is used for mounting the ventilation support arm; the attack angle structure connecting section is used for installing an attack angle structure; the ventilation support arm installation section is connected with the attack angle structure connection section through the air supply support rod main body section; the air supply support arm installation section and the air supply support arm main body section are internally provided with communicated air supply channels, and the side surface of one end of the air supply support arm main body section, which is far away from the air supply support arm, is provided with an air source connection port penetrating into the air supply channels. According to the utility model, the air supply support rod main body section is used for connecting and supporting the installation section of the ventilation support arm and the attack angle structure connecting section, so that the connection stability and the firmness are improved; the ventilation support arm is supplied with air through the air supply flow channel, and the air source connecting port is far away from the ventilation support arm, so that the interference on the model flow field is smaller. The device has the advantages of small flow field interference, high supporting strength and the like.
Description
Technical Field
The utility model relates to the technical field of test aerodynamics, in particular to a connecting section device of an air supply support rod.
Background
Thrust vectoring refers to propulsion systems that, in addition to providing forward thrust to the aircraft, provide engine internal thrust effects on the aircraft pitch, yaw, roll, thrust reverser and forward thrust axes, either simultaneously or separately, to replace external aerodynamic forces generated by conventional aircraft control surfaces or other devices for aircraft control. The thrust vector technology improves the control efficiency of the aircraft, so that the aerodynamic control surface of the aircraft, such as a vertical tail and a horizontal tail, can be greatly reduced, and the weight of the aircraft can be reduced. In addition, the reflecting surface formed by the vertical tail and the flat tail is reduced, and the stealth performance of the aircraft is improved.
The problem of vector jet disturbance is a typical complex flow phenomenon in the streaming of supersonic aircraft. The high-temperature high-speed jet flow generated by the tail jet pipe of the supersonic aviation aircraft and the complex interference flow field formed by the mutual interference of the aircraft bypass flow directly affect the stability, the maneuverability, the aerodynamic characteristics such as lift force, resistance and the like of the aircraft, and greatly affect the aerodynamic characteristics, the control characteristics and the like of the aircraft. The influence of the vector jet on the aerodynamic characteristics of the rear body of the supersonic aircraft is more remarkable, so that the research on the influence of the vector jet on the aerodynamic characteristics of the aircraft is of great significance, and the wind tunnel jet simulation test is an important means for researching the interference effect of the vector jet of the tail jet pipe of the aircraft.
The attack angle mechanism is used for providing attitude angles such as pitching, yawing, rolling and the like given by the aircraft scaling model; the ventilation support arm is used for providing a given air supply pipeline meeting the requirements of aerodynamic parameters such as flow pressure and the like.
The thrust vectoring nozzle aerodynamic performance test needs to have the characteristics of higher supporting strength, smaller flow field influence, more stable air supply and the like, and is different from the conventional jet flow test. In order to meet the ventilation requirement of large flow and large drop ratio, research on the aspect of thrust vector aerodynamic interference of the domestic production type wind tunnel sub-span super wind tunnel is generally carried out by adopting multitube parallel air supply, so that the blocking degree of an attack angle mechanism and an air supply system on the cross section of a test section is large, a stable flow field is difficult to establish, in addition, the flow field is mutually interfered between an air supply pipeline and a model, the real thrust vector flow field of the internal and external flows of an aircraft is difficult to accurately obtain, the requirements of large flow, large drop ratio, low blocking degree, low flow field interference, high-strength support and high-fidelity flow field simulation cannot be met, and the requirement of the air supply switching of the vector jet pipe aerodynamic performance wind tunnel test of an aviation four-generation machine is difficult to be met.
Disclosure of Invention
The utility model aims to provide a gas supply support rod connecting section device which can effectively improve the stability of aerodynamic performance of a vectoring nozzle and reduce the interference of a model flow field;
the utility model provides a gas supply strut connecting section device, comprising: the ventilation support arm mounting section is used for mounting the ventilation support arm; the attack angle structure connecting section is used for installing an attack angle structure; the ventilation support arm installation section is connected with the attack angle structure connection section through the air supply support rod main body section; the air supply support arm mounting section is provided with an air supply runner which is communicated with the air supply support arm mounting section, and the side surface of one end of the air supply support arm, which is far away from the air supply support arm, is provided with an air source connecting port which penetrates into the air supply runner.
Further, the ventilation support arm mounting section and the attack angle structure connecting section are connected with the air supply support rod main body section in an upward corner mode.
Further, the air supply flow passage in the vent arm mounting section has a first corner portion.
Further, the upstream end of the air supply flow channel is provided with a second corner part, and the air source connecting port is arranged on the second corner part.
Further, the air supply flow channel is a groove formed along the length direction of the air supply support rod main body section, and the air supply support rod main body section is provided with a sealing cover plate for sealing the air supply flow channel.
Further, the outer side of the sealing cover plate is provided with a wiring groove.
Further, the sealing cover plate is located on the upper side of the main body section of the air supply supporting rod, and the wiring groove is a semicircular groove formed in the upper side of the sealing cover plate.
Further, an attack angle structure installation section is detachably installed on the attack angle structure connection section, and the attack angle structure is installed on the attack angle structure installation section.
Further, the attack angle structure connecting section and the air supply support rod main body section are integrally formed, and a plurality of pin holes for installing the attack angle structure connecting section are formed in the attack angle structure connecting section.
Further, the ventilation support arm mounting section and the air supply support rod main body section are integrally formed, and a plurality of pin holes for mounting the ventilation support arms are formed in the ventilation support arm mounting section.
According to the technical scheme, the ventilation support arm mounting section and the attack angle structure connecting section are connected and supported through the air supply support rod main body section, so that the ventilation support arm and the attack angle structure are connected, and the connection stability and the firmness are improved; the ventilation support arm is supplied with air through the air supply flow channel, and the air source connecting port is far away from the ventilation support arm, so that the interference on the model flow field is smaller. The device has the advantages of small flow field interference, high supporting strength and the like.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of the internal structure of the present utility model;
FIG. 3 is a schematic view of the present utility model in use;
FIG. 4 is a top view of the present utility model in use;
FIG. 5 is a side view of the present utility model;
FIG. 6 is a cross-sectional view A-A of FIG. 5 in accordance with the present utility model;
FIG. 7 is a side view of the present utility model;
FIG. 8 is a cross-sectional view B-B of FIG. 7 in accordance with the present utility model;
reference numerals illustrate:
the device comprises a 1-ventilation support arm mounting section, a 101-ventilation support arm, a 2-attack angle structure connecting section, a 201-attack angle structure mounting section, a 202-attack angle structure, a 3-air supply support rod main body section, a 301-air supply connecting port, a 302-sealing cover plate, a 303-wiring groove, a 4-air supply runner, a 401-first corner part, a 402-second corner part and a 5-pin hole;
Detailed Description
The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1 to 8, the present utility model provides a gas supply strut connecting segment device, comprising: a vent arm mounting section 1 for mounting a vent arm 101; angle of attack structure connection section 2 for mounting angle of attack structure 202; the air supply support rod main body section 3 is connected with the ventilation support arm mounting section 1 and the attack angle structure connecting section 2 through the air supply support rod main body section 3; the ventilation support arm mounting section 1 and the air supply support arm main body section 3 are internally provided with an air supply flow channel 4 which is communicated, and the side surface of one end of the air supply support arm main body section 3, which is far away from the ventilation support arm 101, is provided with an air source connecting port 301 which penetrates into the air supply flow channel 4.
Specifically, the device is mainly applied to air supply and support of jet flow tests in temporary flushing type sub-span ultra wind tunnels. The air supply support rod connecting section device consists of an air supply support arm mounting section 1, an air supply support rod main body section 3 and an attack angle structure connecting section 2 which are sequentially connected, an external air source enters an air supply flow channel 4 in the air supply support rod main body section 3 through an air source connecting port 301 and then flows to the air supply flow channel 4 in the air supply support arm mounting section 1, and finally leaves from an outlet of the air supply support arm mounting section 1 to enter the air supply support arm 101 to realize air supply. And the angle of attack structure 202 is connected to the angle of attack structure connection section 2 by an angle of attack structure mounting section 201. Thus, in this embodiment 1, stable and firm connection is realized between the attack angle structure 202 and the ventilation support arm 101 through the air supply support rod connection section device, and air is supplied to the ventilation support arm 101 through the air supply runner 4, the air supply connection port 301 is far away from the ventilation support arm 101, so that the interference to the model flow field is smaller, and the air supply connection port 301 is connected with an external air supply pipeline through a flange connection mode, and the ventilation support arm has the characteristics of good tightness, convenience in disassembly and the like.
Example 2
This example 2 describes a solution to further improve stability and reduce flow field interference.
As shown in fig. 1-3, 6 and 8, the mounting section 1 and the angle of attack structural attachment section 2 of the vent arm are connected to the main body section 3 of the air supply strut in such a way that they form an upward corner. The air supply flow channel 4 in the air support arm mounting section 1 has a first corner 401. The upstream end of the air supply flow passage 4 has a second corner 402, and the air supply connection port 301 is opened at the second corner 402.
Specifically, when the ventilation support arm mounting section 1 and the attack angle structure connecting section 2 are respectively connected with the air supply support rod main body section 3 in a corner mode, the weights of the ventilation support arm 101 and the attack angle structure 202 respectively borne on the ventilation support arm mounting section and the attack angle structure connecting section are uniformly dispersed on the air supply support rod main body section 3 in a shearing force and axial force mode, so that the device support is more stable. In addition, in embodiment 2, by designing the ventilation arm mounting section 1 as a corner structure, that is, the ventilation arm mounting section 1 includes two sections connected to each other and forming an included angle (less than 180 °), the air supply flow channel 4 provided in the ventilation arm mounting section 1 also has a first corner portion 401, and when the pressure air upstream (the air source connection port 301) passes through the first corner portion 401, the flow velocity is slowed down, and the rectification effect is provided, so that the air flow reaching the ventilation arm 101 is more stable and the disturbance is smaller. Likewise, the end of the air supply support rod main body section 3 far away from the ventilation support arm mounting section 1 is provided with a corner structure, so that the upstream end of the air supply flow channel 4 is also provided with a second corner part 402, the air flow entering the air supply flow channel 4 from the air source connection port 301 sequentially passes through the second corner part 402 and the first corner part 401, the flow rate is reduced, and the air flow has a rectification effect, so that the air flow reaching the ventilation support arm 101 is more stable and the interference is smaller.
Example 3
The embodiment 3 specifically describes the sealing method of the air supply flow passage 4.
As shown in fig. 1-3 and 8, the air supply flow channel 4 is a groove formed along the length direction of the air supply support rod main body section 3, and a sealing cover plate 302 for sealing the air supply flow channel 4 is arranged on the air supply support rod main body section 3. The outside of the sealing cover plate 302 is provided with a wiring groove 303. The sealing cover plate 302 is located on the upward side of the air supply support rod main body section 3, and the wiring groove 303 is a semicircular groove formed on the upward side of the sealing cover plate 302.
Specifically, the air supply flow channel 4 is opened along the length direction of the air supply support rod main body section 3 and the ventilation support arm mounting section 1, and is used for supplying air to the ventilation support arm 101. In the area of the air supply strut main body section 3, the air supply flow channel 4 is a groove sunk from the upper surface of the air supply strut main body section 3, and a sealing cover plate 302 is connected on the groove in a sealing manner by a screw to seal the air supply flow channel 4, and the sealing cover plate 302 is used for processing convenience. A small-diameter semicircular groove is formed on the upper side surface of the sealing cover plate 302 and is used as a wiring groove 303. The middle profile of the wiring groove 303 is semicircular, and is assembled with the strut connecting section device in a screw connection mode, so that the main function of the wiring groove is that the sensor inside the model is wired, and the wiring groove has the characteristics of small wind tunnel blocking ratio, small wind tunnel flow field interference and the like.
Example 4
This embodiment 4 describes the manner in which the angle of attack structure 202 and the vent arm 101 are mounted.
As shown in fig. 1-3, the angle of attack structure attachment section 2 is detachably mounted with an angle of attack structure mounting section 201, and the angle of attack structure 202 is mounted on the angle of attack structure mounting section 201. The attack angle structure connecting section 2 and the air supply support rod main body section 3 are integrally formed, and a plurality of pin holes 5 for installing the attack angle structure connecting section 2 are formed in the attack angle structure connecting section 2. The ventilation support arm mounting section 1 and the air supply support rod main body section 3 are integrally formed, and a plurality of pin holes 5 for mounting the ventilation support arms 101 are formed in the ventilation support arm mounting section 1.
Specifically, the ventilation support arm mounting section 1 and the air supply support rod main body section 3 are finished in an integrated processing mode, and the problems of structural strength and mounting precision caused by component connection do not exist among the three components. The ventilation support arm mounting section 1 is connected with the ventilation support arm 101 for mounting and matching in a screw tightening pin positioning mode, so that the accuracy and the structural stability of a matching surface are ensured, and the ventilation support arm mounting section has tightening and sealing functions; then the attack angle structure connecting section 2 is connected with the attack angle structure mounting section 201 in a bolt connection mode, and the attack angle structure connecting section is positioned by adopting pins during connection, and has the characteristics of high connection precision and high supporting strength. Finally, the ventilation support arm 101 is connected with the attack angle mechanism.
Working principle:
the ventilation support arm mounting section 1 and the attack angle structure connecting section 2 are connected and supported through the air supply support rod main body section 3, so that the ventilation support arm 101 and the attack angle structure 202 are connected, and the connection stability and the firmness are improved by utilizing the connection relation of the corner structures among the ventilation support arm 101 and the attack angle structure 202; the ventilation support arm 101 is supplied with air through the air supply flow channel 4, and the air source connection port 301 is far away from the ventilation support arm 101, so that the interference of the model flow field is smaller by utilizing two corner parts in the air supply flow channel 4.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (10)
1. A gas supply strut attachment section apparatus comprising:
the ventilation support arm mounting section is used for mounting the ventilation support arm;
the attack angle structure connecting section is used for installing an attack angle structure;
the ventilation support arm installation section is connected with the attack angle structure connection section through the air supply support rod main body section;
the air supply support arm mounting section is provided with an air supply runner which is communicated with the air supply support arm mounting section, and the side surface of one end of the air supply support arm, which is far away from the air supply support arm, is provided with an air source connecting port which penetrates into the air supply runner.
2. The air supply strut attachment section arrangement according to claim 1, wherein the vent arm mounting section and the angle of attack structural attachment section are each connected in an upward corner manner with the air supply strut body section.
3. The air supply strut attachment section arrangement according to claim 2, wherein the air supply flow channel in the vent arm mounting section has a first corner portion.
4. A gas supply strut connection section arrangement according to claim 3, wherein the upstream end of the gas supply flow passage has a second corner portion, the gas source connection port being open at the second corner portion.
5. The air supply strut connecting band device according to claim 1, wherein the air supply flow channel is a groove formed along the length direction of the air supply strut main body section, and a sealing cover plate for sealing the air supply flow channel is arranged on the air supply strut main body section.
6. The gas supply strut attachment section arrangement of claim 5, wherein a wiring groove is provided on an outer side of the sealing cover plate.
7. The gas supply strut connecting band device of claim 6, wherein the sealing cover plate is positioned on an upward side of the gas supply strut main body section, and the wiring groove is a semicircular groove formed on the upward side of the sealing cover plate.
8. The gas strut connection section arrangement of claim 1, wherein the angle of attack structure connection section has an angle of attack structure mounting section removably mounted thereto.
9. The gas supply strut attachment section arrangement of claim 8, wherein said angle of attack structural attachment section is integrally formed with said gas supply strut body section, said angle of attack structural attachment section being provided with a plurality of pin holes for mounting said angle of attack structural attachment section.
10. The air supply strut connecting band device according to claim 1, wherein the air supply strut mounting band is integrally formed with the air supply strut main body band, and the air supply strut mounting band is provided with a plurality of pin holes for mounting the air supply strut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223464794.6U CN218973785U (en) | 2022-12-22 | 2022-12-22 | Air feed support rod connecting section device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223464794.6U CN218973785U (en) | 2022-12-22 | 2022-12-22 | Air feed support rod connecting section device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218973785U true CN218973785U (en) | 2023-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223464794.6U Active CN218973785U (en) | 2022-12-22 | 2022-12-22 | Air feed support rod connecting section device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218973785U (en) |
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2022
- 2022-12-22 CN CN202223464794.6U patent/CN218973785U/en active Active
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